Question

S-SO2-SO3-H2SO4-H2S-SO2

Answer 1

S+O2-->So2
2SO2+O2-->2SO3
So3+H2O-->H2SO4
4Mg + 5H2SO4(конц. ) = 4MgSO4 + H2S↑ + 4H2O
2H2S + 3O2 = 2SO2 + 2H2O

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Answer 2

Sulfur dioxide (SO2) is a chemical compound that is produced when sulfur-containing fuels are burned. It is a colorless gas with a pungent odor. It is also a major air pollutant and is responsible for the formation of acid rain.

Sulfur trioxide (SO3) is a chemical compound that is produced by the reaction of sulfur dioxide and oxygen in the presence of a catalyst. It is a colorless, volatile liquid that is highly reactive and is used in the production of sulfuric acid.

Sulfuric acid (H2SO4) is a highly corrosive and strong mineral acid. It is a colorless, odorless, and viscous liquid that is used in the production of fertilizers, detergents, and explosives. It is also used in the production of lead-acid batteries.

Hydrogen sulfide (H2S) is a colorless, flammable, and toxic gas with a characteristic rotten egg odor. It is produced by the bacterial decomposition of organic matter and is found in natural gas and petroleum. It is also a byproduct of industrial processes and is a major component of natural gas.

The reactions between these compounds can result in the formation of different sulfur compounds. For example, sulfur dioxide can react with oxygen to form sulfur trioxide, which can then react with water to form sulfuric acid. Additionally, hydrogen sulfide can react with sulfur dioxide to form elemental sulfur and water. These reactions are important in industrial processes and environmental chemistry.